<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            list-style: none;
        }
        body,html{
            width: 100%;
            height: 100%;
            overflow: hidden;
            background: #1e577e;
        }
        h1{
            text-align: center;
            color:#fff;
        }
        img{
            width: 100%;
        }
        ul{
            width: 600px;
            height: 600px;
            margin: auto;
            position: relative;
        }
        ul li{
            position: absolute;
            width:180px;
            height: 180px;
            left: 50%;
            top:50%;
            margin-left: -90px;
            margin-top: -90px;
            border-radius:50%;
            border:1px solid #fff;
            overflow: hidden;
        }
        ul li:nth-child(1){
            width:200px;
            height: 200px;
            left: 50%;
            top:50%;
            margin-left: -100px;
            margin-top: -100px;
            border:none;
            z-index: 10;
        }
        .circle{
            opacity: 0
        }
        .go{
            animation: move 2.4s linear infinite
        }
        @keyframes move{
            from{
                transform: scale(1);
                opacity:1
            }
            to{
                transform: scale(4);
                opacity: 0
            }
        }
    </style>
</head>
<body>
    <h1>支付宝咻咻动画特效</h1>
    <ul>
        <li><img src="./1.png" alt=""></li>
        <li class="circle"></li>
        <li class="circle"></li>
        <li class="circle"></li>
        <li class="circle"></li>
    </ul>
</body>
</html>
<script>
    var circles = document.getElementsByClassName('circle');
for(var i = 0; i < circles.length;i++){ 
        circles[i].className='circle go'
        circles[i].style.animationDelay = i*0.6+'s';
    }
</script>
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